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Question

In the given figure, P1 and P2 are the pressure experienced at the points 1 and 2 on a charged conductor respectively. Then:


A
P1>P2
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B
P1<P2
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C
P1=P2
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D
can't be interpreted
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Solution

The correct option is A P1>P2


From the figure we can see that, radius of the surface at point P1 is greater then the radius of the surface at point P2 i.e. R1>R2.

Therefore, electric charge density of the surface at point P1 is greater then that of P2 i.e. σ1>σ2.

We know that the pressure on a charged surface is given by :
P=σ22ϵo

Pσ2

Here, σ1>σ2

P1>P2

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